131296661 has 8 divisors (see below), whose sum is σ = 139314240. Its totient is φ = 123311808.

The previous prime is 131296643. The next prime is 131296681. The reversal of 131296661 is 166692131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131296661 - 2¹⁴ = 131280277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131296681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350 + ... + 16208.

It is an arithmetic number, because the mean of its divisors is an integer number (17414280).

Almost surely, 2^131296661 is an apocalyptic number.

It is an amenable number.

131296661 is a deficient number, since it is larger than the sum of its proper divisors (8017579).

131296661 is a wasteful number, since it uses less digits than its factorization.

131296661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16363.

The product of its digits is 11664, while the sum is 35.

The square root of 131296661 is about 11458.4755094210. The cubic root of 131296661 is about 508.2583948536.

The spelling of 131296661 in words is "one hundred thirty-one million, two hundred ninety-six thousand, six hundred sixty-one".